Published manuscript.pdf (1.61 MB)
4H-SiC Schottky diode arrays for X-ray detection
journal contribution
posted on 2023-06-09, 03:32 authored by Grammatiki LioliouGrammatiki Lioliou, H K Chan, T Gohil, K V Vassilevski, N G Wright, A B Horsfall, Anna BarnettAnna BarnettFive SiC Schottky photodiodes for X-ray detection have been electrically characterized at room temperature. One representative diode was also electrically characterized over the temperature range 20°C to 140 °C. The performance at 30 °C of all five X-ray detectors, in both current mode and for photon counting X-ray spectroscopy was investigated. The diodes were fabricated in an array form such that they could be operated as either a 2×2 or 1×3 pixel array. Although the devices showed double barrier heights, high ideality factors and higher than expected leakage current at room temperature (12 nA/cm2 at an internal electric field of 105 kV/ cm), they operated as spectroscopic photon counting soft X-ray detectors uncooled at 30 °C. The measured energy resolution (FWHM at 17.4 keV, Mo Ka) varied from 1.36 to 1.68 keV among different diodes.
Funding
Royal Society; RS130515
High Efficiency Betavoltaic Cells; G1455; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/M002772/1
In situ X-ray Fluorescence Spectroscopy for Deep Sea Mining Applications; G1537; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/M004635/1
History
Publication status
- Published
File Version
- Published version
Journal
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated EquipmentISSN
0168-9002Publisher
ElsevierExternal DOI
Volume
840Page range
145-152Department affiliated with
- Engineering and Design Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-10-17First Open Access (FOA) Date
2016-10-17First Compliant Deposit (FCD) Date
2016-10-17Usage metrics
Categories
No categories selectedLicence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC